Pith Number

pith:A5XZQVB6

pith:2018:A5XZQVB6KB7I55DVCR2QGPQFGT

not attested not anchored not stored refs pending

Chemical Abundance Signature of J0023+0307 -- A Second-Generation Main-Sequence Star with [Fe/H]<-6

Alexander P. Ji (carnegie), Anirudh Chiti (MIT), Anna Frebel (MIT), Ian B. Thompson (Carnegie), MIT), Rana Ezzeddine (JINA, Terese T. Hansen (Carnegie), Thibault Merle (Brussels)

arxiv:1810.01228 v1 · 2018-10-02 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A5XZQVB6KB7I55DVCR2QGPQFGT}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:53:41.920686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

076f98543e507e8ef4751475033e0534f220c330d848cdd358160edbdbe4985a

Aliases

arxiv: 1810.01228 · arxiv_version: 1810.01228v1 · doi: 10.48550/arxiv.1810.01228 · pith_short_12: A5XZQVB6KB7I · pith_short_16: A5XZQVB6KB7I55DV · pith_short_8: A5XZQVB6

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/A5XZQVB6KB7I55DVCR2QGPQFGT \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 076f98543e507e8ef4751475033e0534f220c330d848cdd358160edbdbe4985a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "febcd4b27bf602656e4d5f39b62144ab21717af6a2664e46ad7213e7d4bbce37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-10-02T13:26:22Z",
    "title_canon_sha256": "422169e6afee6eaa1ca65fcc4d39c7c9a5dc76972124a8101c4cf64b290ecdaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.01228",
    "kind": "arxiv",
    "version": 1
  }
}